scholarly journals XV. Researches on acids of the lactic series.—No. 1. Synthesis of acids of the lactic series

1866 ◽  
Vol 156 ◽  
pp. 309-359 ◽  
Keyword(s):  
Organic Chemistry ◽  
Lactic Acid ◽  
Oxalic Acid ◽  
Organic Acids ◽  
Royal Society ◽  
New Members ◽  
History Of ◽  
The Subject ◽  
Complete History ◽  
General Method

With the exception of the acetic series, no family of organic acids has excited so much interest amongst chemists, and been the subject of such numerous researches, as that represented by lactic acid. Its character, intermediate between the monobasic and dibasic acids, its close relations to the acetic and acrylic families, and the numerous important transformations which it undergoes, have all contributed to render this family an attractive subject for experimental inquiry and a fruitful source of theoretical specu­lation. These inquiries and hypotheses have contributed greatly to the elucidation of the habits of these acids, and still more to the general progress of organic chemistry. Nevertheless there are two circumstances which have materially interfered with their complete success; these are, the comparatively small number of the known members of this series, and the absence of any synthetical proof of the nature of their consti­tuent radicals. These obstacles to a more satisfactory conception of the internal archi­tecture of the acids in question we have endeavoured to remove by the production, according to purely synthetical methods, of a number of new members of this series, a brief notice of which we have from time to time had the honour of submitting to the Royal Society, and the more complete history of which we propose to develope in the following pages. Our general method for synthetically producing the acids of the lactic series depends upon the replacement of one of the atoms of dyad oxygen in oxalic acid, or rather in the ethereal salts of oxalic acid, by two atoms of monad alcohol radicals. Such a replacement at once transforms dibasic oxalic acid into a monobasic acid of the lactic series. The nature of this transformation, as well as the relations of oxalic acid to the lactic family, is clearly seen from the following comparison of the formulae of oxalic acid and of its derivative, dimethoxalic acid.

scholarly journals XIII.—On certain Salts and Products of Decomposition of Comenic Acid

1853 ◽  
Vol 20 (2) ◽  
pp. 225-245
Author(s):  
Henry How
Keyword(s):  
Organic Chemistry ◽  
Organic Acids ◽  
General Formula ◽  
The Other ◽  
Comenic Acid ◽  
History Of ◽  
The Subject ◽  
Field Of Inquiry ◽  
As If

The study of the organic acids appears scarcely to have advanced of late years pari passu with the other branches of organic chemistry. It seems, indeed, as if the development of each of the different departments of the science had been, to a certain extent, periodical; each engrossing the labours of investigators to the temporary exclusion of the others, themselves to be renewed when some new experiments should reawaken an interest in them.However this may be, the subject of the natural and artificial bases has proved so productive of interesting results as to have recently become the chosen and almost exclusive field of inquiry, notwithstanding several investigations which have thrown much light on one class of organic acids, namely, that represented by the general formula Cn Hn O4. With the exception of this section, the history of the organic acids remains very imperfect, and in many cases we have but a meagre account of a few of their salts.

scholarly journals Studies of the processes operative in solutions. XXXI.— Sulphonic acids and sulphuric acid as hydrolytic agents—a discussion of the constitution of sulphuric and other polybasic acids and of the nature of acids

1914 ◽  
Vol 90 (616) ◽  
pp. 73-100
Keyword(s):  
Lactic Acid ◽  
Organic Acids ◽  
Sulphuric Acid ◽  
Present Theory ◽  
Important Place ◽  
Monobasic Acid ◽  
History Of ◽  
The Subject ◽  
Hydroxypropionic Acid

Those who are conversant with the history of the development of our present theory of structure are aware that the constitution of lactic acid was the subject of discussion, in the years 1858-1860, by the distinguished German chemist Kolbe and the equally distinguished French chemist Wurtz, the latter contending that the acid was diabasic, whilst Kolbe held that it was a monatomic monobasic acid, viz. Hydroxypropionic acid—a view which has long been accepted. The discussion has an important place in chemical literature, as it practically involved the recognition of the doctrine that organic acids owe their distinctive properties to the presence of the carboxyl radicle, (CO. OH).

XXIII. On the water-barometer erected in the hall of the Royal Society

1832 ◽  
Vol 122 ◽  
pp. 539-574 ◽  
Keyword(s):  
Royal Society ◽  
Physical Science ◽  
The Other ◽  
Metallic Tube ◽  
French Academy ◽  
History Of ◽  
The Subject ◽  
The Common ◽  
Academy Of Sciences ◽  
Made In

I have for some time entertained an opinion, in common with some others who have turned their attention tot he subject, that a good series of observations with a Water-Barometer, accurately constructed, might throw some light upon several important points of physical science: amongst others, upon the tides of the atmosphere; the horary oscillations of the counterpoising column; the ascending and descending rate of its greater oscillations; and the tension of vapour at different atmospheric temperatures. I have sought in vain in various scientific works, and in the Transactions of Philosophical Societies, for the record of any such observations, or for a description of an instrument calculated to afford the required information with anything approaching to precision. In the first volume of the History of the French Academy of Sciences, a cursory reference is made, in the following words, to some experiments of M. Mariotte upon the subject, of which no particulars appear to have been preserved. “Le même M. Mariotte fit aussi à l’observatoire des experiences sur le baromètre ordinaire à mercure comparé au baromètre à eau. Dans l’un le mercure s’eléva à 28 polices, et dans Fautre l’eau fut a 31 pieds Cequi donne le rapport du mercure à l’eau de 13½ à 1.” Histoire de I'Acadérmie, tom. i. p. 234. It also appears that Otto Guricke constructed a philosophical toy for the amusement of himself and friends, upon the principle of the water-barometer; but the column of water probably in this, as in all the other instances which I have met with, was raised by the imperfect rarefaction of the air in the tube above it, or by filling with water a metallic tube, of sufficient length, cemented to a glass one at its upper extremity, and fitted with a stop-cock at each end; so that when full the upper one might be closed and the lower opened, when the water would fall till it afforded an equipoise to the pressure of the atmo­sphere. The imperfections of such an instrument, it is quite clear, would render it totally unfit for the delicate investigations required in the present state of science; as, to render the observations of any value, it is absolutely necessary that the water should be thoroughly purged of air, by boiling, and its insinuation or reabsorption effectually guarded against. I was convinced that the only chance of securing these two necessary ends, was to form the whole length of tube of one piece of glass, and to boil the water in it, as is done with mercury in the common barometer. The practical difficulties which opposed themselves to such a construction long appeared to me insurmount­able; but I at length contrived a plan for the purpose, which, having been honoured with the approval of the late Meteorological Committee of this Society, was ordered to be carried into execution by the President and Council.

XIV. Researches into the molecular constitution of the organic bases

1851 ◽  
Vol 141 ◽  
pp. 357-398 ◽  
Keyword(s):  
Physical Properties ◽  
Royal Society ◽  
General Outline ◽  
Organic Bases ◽  
History Of ◽  
The Subject ◽  
Molecular Constitution

About twelve months ago I had the honour of presenting to the Royal Society an account of a series of researches into the molecular constitution of the volatile organic bases: at present I beg to submit to the consideration of the Society the history of a new group of alkaloids, which, although intimately connected with the former by their origin, differ from them altogether by their properties, and especially in not being volatile . The members of this new group of alkaloids are so numerous, their deportment is so singular, and their derivatives ramify in so many directions, that I have not as yet been able to complete the study of these substances in all their bearings; nor is it my intention to go fully into the chemistry of the subject in the present com­munication, my object being merely to establish the existence of these bodies, and to give a general outline of their connection with the volatile bases, and of their most prominent chemical and physical properties, reserving a detailed description of their salts and derivatives to a future memoir.

Educational Software Evaluation

2011 ◽  
pp. 699-711 ◽  
Author(s):  
Michael Shaughnessy
Keyword(s):  
Educational Software ◽  
Evaluation Methodology ◽  
Evaluation Methodologies ◽  
Initial Investigation ◽  
History Of ◽  
The Subject ◽  
Software Methodologies ◽  
The Individual ◽  
Evaluation Techniques ◽  
Complete History

From 1980 to 2000, there were many articles written on the subject of software review and evaluation. Upon initial investigation of educational software methodologies, it appears that there are as many evaluation methodologies as there are authors presenting them. Several articles (methodology analyses) have been written describing these evaluation techniques (Bryson & Cullen, 1984; Eraut, 1989; Holznagel, 1983; Jones et al., 1999; McDougall & Squires, 1995; Reiser & Kegelmann, 1994, 1996; Russell & Blake, 1988). Each of these articles describes various methodologies and presents the most current evaluation methodology available, but fails to provide a complete history of the types of evaluation methodologies. These analyses of evaluation methodologies focus on the individual methodology, but refrain from putting individual methodologies into a greater systematic context.

scholarly journals IV. Notice as to the supposed identity of the large mass meteoric iron now in the British Museum, with the celebrated Otumpa iron described by Rubin de Celis in the Philosophical Transactions for 1786. Communicated in a letter from Woodbine Parish, Esq. F. R. S. to Charles König, Esq. Foreign Secretary of the Royal Society

1834 ◽  
Vol 124 ◽  
pp. 53-54
Keyword(s):  
Royal Society ◽  
British Museum ◽  
Large Mass ◽  
The Real ◽  
Gran Chaco ◽  
Native Iron ◽  
History Of ◽  
The Subject ◽  
Humphry Davy

As the identity of the large mass of meteoric iron in the British Museum with the celebrated Otumpa iron, described by Rubin de Celis in the Philosophical Transactions for 1786, has been the subject of frequent inquiry, the following short historical notice, relating to that mass, is communicated by Woodbine Parish, Esq. F. R. S., by whom, when His Majesty’s Chargé d’Affaires at Buenos Ayres, it was sent to England. -C. K. “Dear Sir, “Agreeably to my promise, I have taken some trouble to ascertain the precise history of the large mass of native iron which I sent home to Sir Humphry Davy from Buenos Ayres, and which is deposited in the British Museum. There is no doubt of its coming from the same place as that described by Rubin de Celis, though whether it be a fragment of that particular mass upon which he made his report, or a smaller one in its immediate vicinity, I am not able to say, for there certainly is an impression at Buenos Ayres that there is not only one, but that several masses of this iron are to be found in that part of the Gran Chaco referred to by Rubin de Celis. I was under the impression that it had been sent for in order to be forwarded to Madrid; but in this I was led into error; and I have only lately ascertained through Mr. Moreno, the Buenos Ayrean Minister, that the real history of its being at Buenos Ayres is as follows.

scholarly journals II. The convolutional pattern of the brains of identical twins: a study on hereditary resemblance in the furrows of the cerebral hemispheres

1918 ◽  
Vol 208 (348-359) ◽  
pp. 37-61 ◽  
Keyword(s):  
Royal Society ◽  
Identical Twins ◽  
Laboratory Research ◽  
Scientific Interest ◽  
Correct Description ◽  
Research Committee ◽  
Points Of Interest ◽  
History Of ◽  
The Subject ◽  
Scientific Value

The study of the similarity of the convolutional pattern of the brains of relatives has been the subject of considerable attention in the Pathological Laboratory at Claybury, under the direction of Dr. F. W. Mott. At his request Dr. Fisher has been forwarding to the Laboratory a number of fœtuses and children born dead that have occurred in his practice at Shoreditch Infirmary. It has thus happened that full term identical twins came into Dr. Mott’s possession. Realising the scientific value of a correct description of the similarity of the convolutional pattern in the brains of these twins, he has handed them to me and I have carefully studied the same on the lines previously adopted by Schuster in his description of the brains of relatives dying in the London Asylums. I have also made a study of the nervous plexuses and other morphological points of interest. I have been able to give my whole attention to laboratory research owing to the liberal grant made by the Medical Research Committee, and this study is a small part of the work which I have accomplished during the last year. But it was thought by the Director to be of sufficient scientific interest to present to the Royal Society, especially having regard to its being a morphological contribution to the important observations of the late Sir Francis Galton on the history of twins.

IV. On oxalic acid

1808 ◽  
Vol 98 ◽  
pp. 63-95 ◽  
Keyword(s):  
Oxalic Acid ◽  
History Of ◽  
Complete History

Oxalic acid, from the united testimony of Ehrhart, Hermbstadt, and Westrumb, appears to have been discovered by Scheele; but it is to Bergman that we are indebted for the first account of its properties. He published his dissertation on it in 1776, and since that time very little has been added to the facts contained in his valuable treatise. Chemists have chiefly directed their attention to the formation of that acid, and much curious and important information has resulted from the experiments of Hermbstadt, Westrumb, Berthollet, Fourcroy, and Vauquelin, &c. but the properties of the acid itself, have been rather neglected. My object in the following pages is not to give a complete history of the properties of oxalic acid, but merely to state the result of a set of experiments, undertaken with the view of ascertaining different particulars respecting it, which I conceived to be of importance.

scholarly journals „Philosophical Transactions of the Royal Society” Henry’ego Oldenburga z lat 1665–1677 i naukowe doniesienia z Rzeczypospolitej ze szczególnym uwzględnieniem prac Jana Heweliusza

2019 ◽  
Vol 62 ◽  
pp. 19-34
Author(s):  
Aneta Firlej-Buzon
Keyword(s):  
Royal Society ◽  
17Th Century ◽  
Special Consideration ◽  
History Of ◽  
The Subject ◽  
Royal City ◽  
The Republic ◽  
English Journal

HENRY OLDENBURG’S PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY 1665–1677 AND SCIENTIFIC REPORTS FROM THE REPUBLIC OF POLAND WITH SPECIAL CONSIDERATION OF THE WORKS OF JAN HEWELIUSZThe purpose of this paper is to reveal the presence in the pages of the fi rst scientifi c English journal The Philosophical Transactions of the scholars associated with the Republic of Poland or conducting scientifi c research or experimental observations on the Polish territory. The subject of articles edited and published by Henry Oldenburg during the years 1665–1677 will be outlined, as well as the dynamics of research in the Republic of Poland. Analized were original scientifi c texts sent from Poland to the editor of the journal during the years 1665–1677, as well as the citations of these works or studies from the area of Republic of Poland. Studies have shown that the most active author was Jan Heweliusz — astronomer from the Free Royal City Gdańsk. Unfortunately, other important works of Polish scientists were not published in the journal. The reasons for this lack should be sought in many sorts of factors in the history of Poland in the 17th century.

scholarly journals A gunpowder controversy in the early Royal Society, 1667–70

2019 ◽  
Vol 74 (1) ◽  
pp. 73-94
Author(s):  
Haileigh Robertson
Keyword(s):  
Royal Society ◽  
Francis Bacon ◽  
High Status ◽  
Direct Connection ◽  
History Of ◽  
The Subject ◽  
Shed Light

In 1667, ‘The History of Saltpetre and Gunpowder’ by Thomas Henshaw was published in Thomas Sprat's The History of the Royal Society . Three years later, Henshaw's work was subject to a scathing review by the notorious anti-Royal Society pamphleteer, Henry Stubbe. I argue that, for Stubbe, Henshaw was not merely a passive representative of the Royal Society through which he could direct his ire, but gunpowder, the subject of Henshaw's research, was important. Both Henshaw and Stubbe employed gunpowder deliberately and strategically. In this article I explore the reasons behind the Royal Society deciding to publish a ‘Baconian history’ of gunpowder. First I argue that the high status of gunpowder was used as a justification for experimental pursuits, and it provided a direct connection to the Society's forebear Francis Bacon. But Stubbe, who was already a critic of the Royal Society, happened to have knowledge that made him uniquely placed to write animadversions against Henshaw's paper. Secondly, gunpowder can shed light on the Baconian histories and the challenges faced by Baconian scholars in putting this project into practice.

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